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| PI7C8148B 2-PORT PCI-to-PCI BRIDGE PLX PCI6152 COMPARISON FEATURE COMPARISON: PI7C8148B vs. PLX PCI6152 Features: Feature Interfaces ! Complies with the following specifications: PCI Local Bus Specification PCI-to-PCI Bridge Architecture Specification ! 3.3V and 5V signaling environments ! 66MHz capable ! Asynchronous Mode support ! Concurrent primary and secondary bus operations Memory Buffer Architecture ! Dynamic Prefetching Control Bus Arbitration ! Programmable internal arbiter for the secondary bus with support for up to 4 external masters IEEE 1149.1 JTAG port ! Available boundary scan testing Compact PCI Hot Swap ! Hot Swap Friendly Support Packaging ! 160-pin PBGA ! Extended commercial temp range: 0C to 85C Pin differences (160-pin PBGA): pin number N7 P7 Pericom PI7C8148B SCAN_EN SCAN_TM# PLX PCI6152 NAND_O GOZ_L Pericom PI7C8148B Revision 2.2 Revision 1.1 yes yes yes yes yes yes no yes yes yes PLX PCI6152 Revision 2.1 Revision 1.1 no (3.3V w/5V tolerance) yes no yes no yes no yes yes no (0C to 70C) SCAN_TM# (P7) should be pulled HIGH for normal operation (same as the PLX solution). SCAN_EN (N7) becomes an output when SCAN_TM# is pulled HIGH. Register differences: Vendor ID Device ID Pericom PI7C8148B 12D8h 8140h PLX PCI6152 3388h 0021h PERICOM SEMICONDUCTOR Page 1 of 2 Revision 1.0 AUGUST 2004 PI7C8148B 2-PORT PCI-to-PCI BRIDGE PLX PCI6152 COMPARISON PERFORMANCE COMPARISON: PI7C8148B vs. PLX PCI6152 The performance data was measured using an in-house evaluation board slotted into an off-the-shelf motherboard. Fast Ethernet (100Mbit LAN) Cards reside in each of the 4 PCI slots on the secondary bus of the evaluation board. In each comparison, the hardware and software remain constant. The only item changed is the bridge on the evaluation board. Two different sets of hardware were used, and the description of each fixture is listed. In each test setup, a PCI exerciser program is used to generate traffic or write packets from the PCI Fast Ethernet card to memory and then read back from memory to the PCI Fast Ethernet card. TEST CASE 1 Motherboard: Chipset: Processor: Memory: Video: Other PCI Devices: SuperMicro P3TDLE ServerWorks ServerSet III LE Intel PIII 800 512MB S3 TrioV64/DX No other PCI devices active A Fast Ethernet card running full duplex is slotted in each of the 4 PCI slots on the evaluation board. Results: Transfer rate measured in Megabits per second Card Number LAN Card 1 LAN Card 2 LAN Card 3 LAN Card 4 Pericom PI7C8148B 42.61 - 46.99 Mb/s 84.33 - 89.14 Mb/s 46.19 - 48.12 Mb/s 84.81 - 89.01 Mb/s PLX PCI6152 19.84 - 22.07 Mb/s 66.17 - 70.66 Mb/s 18.70 - 22.14 Mb/s 67.14 - 70.40 Mb/s TEST CASE 2 Motherboard: Chipset: Processor: Memory: Video: Other PCI Devices: MSI GNB Max Intel E7205 Intel P4 2.4GHz 256MB nVidia GeForce 2 MX-400 No other PCI devices active A Fast Ethernet card running full duplex is slotted in each of the 4 PCI slots on the evaluation board. Results: Transfer rate measured in Megabits per second Card Number LAN Card 1 LAN Card 2 LAN Card 3 LAN Card 4 Pericom PI7C8148B 27.16 - 31.30 Mb/s 26.70 - 32.78 Mb/s 27.54 - 32.18 Mb/s 27.63 - 32.13 Mb/s PLX PCI6152 21.50 - 28.55 Mb/s 23.02 - 28.29 Mb/s 22.05 - 27.61 Mb/s 23.09 - 27.05 Mb/s PERICOM SEMICONDUCTOR Page 2 of 2 Revision 1.0 AUGUST 2004 |
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